The Dinobot Hunt comes to it's conclusion in the human settlement of Doonstown. The Decepticons have unleashed their captive Dinobot, Sludge against the last, and deadliest Dinobot of all - Grimlock! Three Autobots have already been seriously injured in the wake of this titanic battle, much to the delight of Soundwave and the Decepticons. Can Optimus Prime and his fellow Autobot comrades stop the Dinobots from destroying everything in their path, or will the Decepticons emerge triumphant?